System requirements:IOS iphone4s IOS8 and above,android 4.3 BT 4.0 and above
Bluetooth version:BLE4.0
Bluetooth chip:nRF51822
Heart rate sensor:PPG(PhotoPlethysmoGraphyPPG)
Acceleration sensor:Three axis acceleration
Screen size:OLED0.91
Battery capacity:80mAh
Standby time:10-15days
Battery life:5-7days
Continous heart rate test:48hours
Charging mode:Clip charging
Power requirements:5V 500mA
Charging time:30minuites or so
Button way:Touch button
Language:Chinese English
Motor:Cylindrical vivration motor
Waterproof grade:IP68
Product size:56mm*21mm*10mm
Note:
Please stop using it when any discomfort symptoms happen. If use substandard charging power supply, will shorten the battery life, and even damage the battery.
It applies to the following models: iPhone 4S/5/5C/5S/6/6P IOS8.0 and above, Android 4.3 and Bluetooth 4.0 version.

• Variety function:This smart bracelet watch wristband will help keep your daily activity, training and sleep in balance for a healthier lifestyle. Help you monitor the daily sport condition. Heart Rate Testing,IP68 water proof,swimming Monitor,Sport Pedometer ,Calorie,Wechat sport,silent alarm,sleep reminder,Palming brighten screen,distance message alert,Call reminder
• Comfortable and Wearable:perfect to fit your wrist with adjustable wristband, Light and durable, dust and water resistant protection. And it has sweatproof function, when you do some exercise you can enjoy it and do not need to worry about the sweat will damage your watch.
• Exercise is to be cool:IP68 Grade Waterproof And Dustproof: DF23 smart bracelet waterproof level up to IP68 taking shower and swimming available.
• Enjoy wechat : DF23 bracelet bring with Wechat sport function,let you make girlfriend,motion PK enjoying and receive message,calling display function, let your life more intelligent and convenient!
• Data graph:After connect with the smart bracelet watch phone, total distance, total steps, total calories, Min heart rate, average heart rate, max heart rate, yesterday data and data summary will be shown on the App interface.

Variety function:This smart bracelet watch wristband will help keep your daily activity, training and sleep in balance for a healthier lifestyle. Help you monitor the daily sport condition. Heart Rate Testing,IP68 water proof,swimming Monitor,Sport Pedometer ,Calorie,Wechat sport,silent alarm,sleep reminder,Palming brighten screen,distance message alert,Call reminderHXYG